Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Fort Atkinson's average high-temperature decreases in December, falling from a wintry 41.9°F (5.5°C) in November to a subzero cold 28.4°F (-2°C). Throughout the month of December, Fort Atkinson sees a steady low-temperature average of 18.3°F (-7.6°C).Humidity
In Fort Atkinson, Iowa, the average relative humidity in December is 86%.Rainfall
In Fort Atkinson, in December, it is raining for 6.4 days, with typically 1.65" (42mm) of accumulated precipitation. In Fort Atkinson, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Fort Atkinson, Iowa, it is snowing for 13.1 days. Throughout December, 4.57" (116mm) of snow is accumulated. In Fort Atkinson, during the entire year, snow falls for 60.9 days and aggregates up to 24.37" (619mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:20 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:42 pm CST.
Sunshine
The average sunshine in December in Fort Atkinson, Iowa, is 3.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is December in Fort Atkinson?
What is the average humidity in December in Fort Atkinson?
How much does it rain in Fort Atkinson in December?
How much does it snow in Fort Atkinson in December?
What is the month with the shortest days in Fort Atkinson?
How many hours of daylight does Fort Atkinson have in December?
When are sunrise and sunset in December in Fort Atkinson?
How many hours of sunshine does Fort Atkinson have in December?
When is the lowest UV index in Fort Atkinson?
What is the UV index reading in December in Fort Atkinson?
Average temperature in December
Fort Atkinson, IA
- Average high temperature in December: 28.4°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in December
Fort Atkinson, IA
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Fort Atkinson, IA
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Fort Atkinson, IA
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Fort Atkinson, IA
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Fort Atkinson, IA
- Average rainfall days in December: 6.4 days
The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in December
Fort Atkinson, IA
- Average snowfall in December: 4.57"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fort Atkinson, IA
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Fort Atkinson, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Fort Atkinson, IA
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).
Average UV index in December
Fort Atkinson, IA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Fort Atkinson, IA
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Fort Atkinson, IA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Fort Atkinson, Iowa, USA
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